The Zen Harp is an open-source software MIDI keyboard with velocity sensitivity and preternaturally fast key pads. Use the sample virtual harp program and looper or write you own fantastic MIDI UI using the Arduino toolchain. Requires a synthesizer accepting USB MIDI like a DAW on a PC.
Introduced at Knobcon 2024 I'm building inventory back: kit $140/assembled $240 Drop me a contact email if you might be interested
